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1-Pentyne

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Identification
Molecular formula
C5H8
CAS number
627-19-0
IUPAC name
pent-1-yne
State
State

At room temperature, 1-pentyne is a liquid. It is volatile and should be handled with care due to its flammable nature.

Melting point (Celsius)
-101.30
Melting point (Kelvin)
171.85
Boiling point (Celsius)
40.20
Boiling point (Kelvin)
313.35
General information
Molecular weight
68.12g/mol
Molar mass
68.1170g/mol
Density
0.6916g/cm3
Appearence

1-Pentyne is a colorless liquid with a gasoline-like odor. It is clear and volatile, with no distinctive coloration.

Comment on solubility

Solubility of Pent-1-yne

Pent-1-yne, with the chemical formula C5H8, is an alkyne that exhibits interesting solubility characteristics.

Its solubility can be summarized as follows:

  • Polar Solvent Compatibility: Pent-1-yne is largely insoluble in polar solvents like water due to its hydrophobic hydrocarbon structure.
  • Non-Polar Solvent Compatibility: It demonstrates good solubility in non-polar solvents such as hexane and benzene, which is characteristic of hydrocarbon compounds.
  • Temperature Dependence: The solubility in organic solvents can be affected by temperature, often increasing with rising temperature as solubilizing forces break down the solvent's structure.

In summary, while pent-1-yne remains virtually insoluble in polar environments, it thrives in non-polar conditions, showcasing the classic principle that "like dissolves like." This behavior is crucial for its applications in organic synthesis and as a precursor in various chemical reactions.

Interesting facts

Interesting Facts about Pent-1-yne

Pent-1-yne, an alkyne with five carbon atoms, showcases the intriguing properties and reactions typical of its class. This compound is a linear hydrocarbon with the triple bond located at the first carbon, which imparts unique characteristics to it. Here are some noteworthy aspects of pent-1-yne:

  • Structure and Reactivity: Pent-1-yne includes a triple bond between the first two carbon atoms, making it a terminal alkyne. This structure grants it reactivity that can be utilized in various organic reactions, such as addition reactions with halogens.
  • Applications: Pent-1-yne serves as a building block in organic synthesis. It can be used to create more complex molecules, which are especially useful in pharmaceuticals and material sciences.
  • Isomerism: Apart from pent-1-yne, there are geometric isomers, such as 2-pentyne and 3-pentyne, which have the triple bond located at different positions. This variation allows for diverse chemical behaviors and properties.
  • Combustion: Pent-1-yne combusts in the presence of oxygen, producing carbon dioxide and water. This reaction releases energy, showcasing the energy-rich nature of alkynes.
  • Safety Note: Like many hydrocarbons, pent-1-yne is flammable and should be handled with care in well-ventilated spaces.

To summarize, pent-1-yne exemplifies the fascinating world of alkynes and their importance in organic chemistry. As a student or budding chemist, understanding the behavior and applications of such compounds is crucial for delving deeper into the field.

As noted by chemists, "The magic of chemistry lies in how simple molecules can lead to complex discoveries."

Synonyms
1-PENTYNE
pent-1-yne
Propylacetylene
Acetylene, propyl-
EINECS 210-987-1
AI3-37709
C3H7C.$.CH
DTXSID7060835
DTXCID3043493
210-987-1
ibxncjkffqikky-uhfffaoysa-n
inchi=1/c5h8/c1-3-5-4-2/h1h,4-5h2,2h
un3295
627-19-0
EW8XD8E5WF
Pentyne
1-Pentine; Propylacetylene
1-Pentyne, 99%
MFCD00009469
pentin
pentyn
n-pentyne
1-n-pentyne
UNII-EW8XD8E5WF
CHEMBL16262
AKOS015836210
DB-054261
NS00035144
P0068
EN300-94380
D91892
doi:10.14272/IBXNCJKFFQIKKY-UHFFFAOYSA-N.1
Q1047617